Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Gobiidae
(Gobies) > Sicydiinae
Etymology: pentecost: Named for its type locality, Pentacost Island in Vanuatu; noun in apposition.
Environment / Climate / Range
Freshwater; pelagic-neritic; amphidromous; depth range ? - 5 m (Ref. 86942). Tropical, preferred ?
Countries | FAO areas | Ecosystems | Occurrences |
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Point map | Introductions | Faunafri
Oceania: Vanuatu and New Caledonia (Ref 85524 and Ref. 87781).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 4.5 cm SL male/unsexed; (Ref. 85524); 4.3 cm SL (female)
Morphology | Morphometrics
soft rays: 9 - 10. This species is distinguished by the following characters: pectoral rays 15; upper jaw with numerous teeth (21-26); less lateral scale series (14-29) and zigzag series (11-14); second dorsal fin in females long; caudal peduncle short; head blackish, dorsally with blackish band extending from the tip of snout and upper lip, under the eye to the posterior edge of operculum and pectoral base; blackish band extends from the back of the eye to the dorsal part of pectoral fin base and to caudal fin along midline (Ref. 85524).
This species is found in clear, high gradient streams with rocky bottom. It lives on the bottom, on top of rocks, and often seen swimming in open water in the current between rocks or in large pools. Like its congeners, it is presumed to spawn in freshwater, the free embryos drift downstream to the sea where these undergo a planktonic phase, and before returning to the rivers to grow and reproduce (Ref. 85524).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Keith, P., C. Lord and L. Taillebois, 2010. Sicyopus (Smilosicyopus) pentecost, a new species of freshwater goby from Vanuatu and New Caledonia (Gobioidei: Sicydiinae). Cybium 34(3):303-310. (Ref. 85524)
IUCN Red List Status (Ref. 109396)
CITES (Ref. 94142)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), based on all LWR estimates for this body shape (Ref. 93245
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months ().
Vulnerability (Ref. 59153
): Low vulnerability (12 of 100) .